bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Dec. 23, 2023
Abstract
Gut
microbe-derived
short-chain
fatty
acids
(SCFAs)
are
known
to
have
a
profound
impact
on
various
brain
functions,
including
cognition,
mood,
and
overall
neurological
health.
However,
their
role,
if
any,
in
protecting
against
hypoxic
injury
ischemic
stroke
has
not
been
extensively
studied.
In
this
study,
we
investigated
the
effects
of
two
major
SCFAs
abundant
gut,
propionate
(P)
butyrate
(B),
hypoxia-reperfusion
using
neuronal
cell
line
zebrafish
model.
Neuro
2a
(N2a)
cells
treated
with
P
B
exhibited
reduced
levels
mitochondrial
cytosolic
reactive
oxygen
species
(ROS),
diminished
loss
membrane
potential,
suppressed
caspase
activation,
lower
rates
death
when
exposed
CoCl
2
-induced
hypoxia,
compared
control
group.
Furthermore,
adult
fed
SCFAs-supplemented
feeds
showed
less
susceptibility
conditions
group,
as
indicated
by
multiple
behavioral
measures.
Histological
analysis
TTC-stained
sections
revealed
lesser
damage
SCFAs-fed
We
also
found
that
FABP7
(also
BLBP),
neuroprotective
acid
binding
protein,
was
upregulated
brains
Additionally,
overexpressed
N2a
cells,
it
protected
from
injury.
Overall,
our
data
clearly
demonstrates
role
suggests
potential
dietary
supplementation
mitigate
stroke-induced
damage.
Highlights
Short-chain
(SCFA)
Propionate
Butyrate
(B)
protect
hypoxia-reperfusion.
Zebrafish,
an
SCFA-supplemented
diet,
more
resilient
diet
boost
expression
(fatty
protein).
overexpression
provides
protection
reduce
(ROS)
increase
FABP7,
contributing
neuroprotection.
Translational Neurodegeneration,
Journal Year:
2023,
Volume and Issue:
12(1)
Published: Dec. 15, 2023
Parkinson's
disease
(PD)
is
one
of
the
most
prevalent
neurodegenerative
diseases.
The
typical
symptomatology
PD
includes
motor
symptoms;
however,
a
range
nonmotor
symptoms,
such
as
intestinal
issues,
usually
occur
before
symptoms.
Various
microorganisms
inhabiting
gastrointestinal
tract
can
profoundly
influence
physiopathology
central
nervous
system
through
neurological,
endocrine,
and
immune
pathways
involved
in
microbiota-gut-brain
axis.
In
addition,
extensive
evidence
suggests
that
gut
microbiota
strongly
associated
with
PD.
This
review
summarizes
latest
findings
on
microbial
changes
their
clinical
relevance,
describes
underlying
mechanisms
which
bacteria
may
mediate
PD,
discusses
correlations
between
microbes
anti-PD
drugs.
this
outlines
status
research
therapies
for
future
directions
PD-gut
research.
Redox Biology,
Journal Year:
2024,
Volume and Issue:
71, P. 103092 - 103092
Published: Feb. 16, 2024
In
this
review,
we
explore
how
short-chain
fatty
acids
(SCFAs)
produced
by
the
gut
microbiome
affect
Parkinson's
disease
(PD)
through
their
modulatory
interactions
with
alpha-synuclein,
neuroinflammation,
and
oxidative
stress
mediated
reactive
oxygen
nitrogen
species
(ROS/RNS).
particular,
SCFAs-such
as
acetate,
propionate,
butyrate-are
involved
in
gut-brain
communication
can
modulate
alpha-synuclein
aggregation,
a
hallmark
of
PD.
The
patients
PD
has
lower
levels
SCFAs
than
healthy
individuals.
Probiotics
may
be
potential
strategy
to
restore
alleviate
symptoms,
but
underlying
mechanisms
are
not
fully
understood.
Also
discuss
present
guts
brains
PD,
induce
neuroinflammation
via
ROS/RNS.
Alpha-synuclein
is
considered
an
early
biomarker
for
link
axis
pathogenesis.
Therefore,
elucidating
role
impact
on
alpha-synuclein-induced
microglia
ROS/RNS
crucial
pathogenesis
treatment.
Brain Sciences,
Journal Year:
2025,
Volume and Issue:
15(2), P. 159 - 159
Published: Feb. 6, 2025
Parkinson's
disease
is
recognized
as
the
second
most
prevalent
neurodegenerative
disorder
globally,
with
its
incidence
rate
projected
to
increase
alongside
ongoing
population
growth.
However,
precise
etiology
of
remains
elusive.
This
article
explores
inflammatory
mechanisms
linking
gut
microbiota
disease,
emphasizing
alterations
in
and
their
metabolites
that
influence
disease's
progression
through
bidirectional
transmission
signals
along
gut-brain
axis.
Building
on
this
mechanistic
framework,
further
discusses
research
methodologies
treatment
strategies
focused
metabolites,
including
metabolomics
detection
techniques,
animal
model
investigations,
therapeutic
approaches
such
dietary
interventions,
probiotic
treatments,
fecal
transplantation.
Ultimately,
aims
elucidate
relationship
between
underlying
thereby
paving
way
for
novel
avenues
condition.
npj Parkinson s Disease,
Journal Year:
2025,
Volume and Issue:
11(1)
Published: March 19, 2025
Abstract
Epidemiological
studies
reveal
that
inflammatory
bowel
disease
(IBD)
is
associated
with
an
increased
risk
of
Parkinson’s
(PD).
Gut
dysbiosis
has
been
documented
in
both
PD
and
IBD,
however
it
currently
unknown
whether
gut
underlies
the
epidemiological
association
between
diseases.
To
identify
shared
distinct
features
IBD
microbiome,
we
recruited
54
PD,
26
16
healthy
control
individuals
performed
first
joint
analysis
metagenomes.
Larger,
publicly
available
metagenomic
datasets
were
also
analyzed
to
validate
extend
our
findings.
Depletions
short-chain
fatty
acid
(SCFA)-producing
bacteria,
including
Roseburia
intestinalis,
Faecalibacterium
prausnitzii,
Anaerostipes
hadrus
,
Eubacterium
rectale
as
well
depletion
SCFA-synthesis
pathways
detected
across
datasets,
suggesting
these
microbes
may
influence
for
development.
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(8), P. 3658 - 3658
Published: April 12, 2025
This
narrative
review
presents
the
role
of
antioxidants
in
regulating
gut
microbiota
and
impact
on
gut–brain
axis,
with
a
particular
focus
neurodegenerative
diseases,
such
as
Alzheimer’s
(AD)
Parkinson’s
disease
(PD).
These
diseases
are
characterised
by
cognitive
decline,
motor
dysfunction,
neuroinflammation,
all
which
significantly
exacerbated
oxidative
stress.
elucidates
contribution
damage
to
progression
explores
potential
mitigate
these
pathological
processes
through
modulation
associated
pathways.
Based
recent
studies
retrieved
from
reputable
databases,
including
PubMed,
Web
Science,
Scopus,
this
article
outlines
mechanisms
influence
health
exert
neuroprotective
effects.
Specifically,
it
discusses
how
antioxidants,
polyphenols,
vitamins,
flavonoids,
contribute
reduction
reactive
oxygen
species
(ROS)
production
thereby
promoting
neuronal
survival
minimising
brain.
In
addition,
modulating
key
molecular
pathways
involved
stress
NF-κB,
Nrf2,
MAPK,
PI3K/AKT
pathways,
regulate
ROS
generation,
inflammatory
cytokine
expression,
antioxidant
responses
essential
for
maintaining
cellular
homeostasis
both
central
nervous
system.
complex
relationship
between
gut-derived
metabolites,
stress,
highlighting
dysbiosis—an
imbalance
microbiota—can
exacerbate
accelerating
AD
PD.
The
also
examines
short-chain
fatty
acids
(SCFAs)
produced
beneficial
bacteria
attenuate
neuroinflammation
damage.
Furthermore,
therapeutic
microbiota-targeted
interventions,
delivery
probiotics
prebiotics,
innovative
strategies
restore
microbial
support
brain
health.
By
synthesising
current
knowledge
interplay
underlying
neurodegeneration,
highlights
promise
antioxidant-based
interventions
mitigating
progression.
It
need
further
research
into
antioxidant-rich
dietary
microbiota-focused
therapies
promising
avenues
prevention
treatment
diseases.